Cluster synchronization of discrete laser time-space network with different structure is researched. Firstly, the Lyapunov theorem is used to construct a suitable Lyapunov function to realize the cluster synchronization of the discrete time-space network and the target system. Secondly, the recognition function of the variation parameter in network and the network synchronization controller are designed. Finally, the laser phase conjugate wave spatial expansion system with spatiotemporal chaos behavior, Gibbs electro-optical spatiotemporal chaos model and Bragg acousto-optic spatiotemporal chaos model are selected as the state equations of three cluster network nodes. The dynamic equation of the coupled map lattice with single phase is used as a target system, and the feasibility of the synchronization scheme is verified by numerical simulation. The designed synchronization technology is suitable to both the synchronization of the same structure networks and the synchronization of different structure networks. Therefore, it’s generally suitable.